I think my greatest 4th wall break was this chapter here: http://kickmancomic.mattslawblog.com/comic/selling-out-1/
It's broken on so many levels. The characters are aware that they are in a comic, are able to independently act contrary to the written script at some times but not at others. It's like a Dystopian/Kafka-esque Ferris Bueller's Day Off.